摘要：#include<iostream>using namespace std;class Cbase;Cbase *pc = NULL;class Cbase{public: Cbase() { //将指向基类的this指针赋给全局Cbase类指针 pc = this; }public: virtual void fun(){ cout<<"class Cbase"<<endl;}};class Cchild : public Cbase{public: virtual void fun() { cout << "cl 阅读全文